如何找到 android 应用程序的代码覆盖率以进行手动测试？

Question

我想查找 Android 应用程序 (Android studio + gradle) 的手动测试和自动测试 (appium) 的代码覆盖率。

Whosebug 上已经有一些与此问题相关的问题，但其中 none 对我有用。我已经按照这个问题的步骤进行了： sdcard/ 中正在生成的 jacoco.exec 文件是 37 字节，基本上是空的。

build.gradle的当前配置：

apply plugin: 'com.android.application'

apply plugin: 'jacoco'
def coverageSourceDirs = [
        '../app/src/main/java'
]

jacoco{
    toolVersion = "0.7.4.201502262128"
}

task jacocoTestReport(type: JacocoReport) {
    group = "Reporting"
    description = "Generate Jacoco coverage reports after running tests."
    reports {
        xml.enabled = true
        html.enabled = true
    }
    classDirectories = fileTree(
            dir: './build/intermediates/classes/debug',
            excludes: ['**/R*.class',
                       '**/*$InjectAdapter.class',
                       '**/*$ModuleAdapter.class',
                       '**/*$ViewInjector*.class'
            ])
    sourceDirectories = files(coverageSourceDirs)
    executionData = files("$buildDir/outputs/code-coverage/connected/coverage.exec")
    doFirst {
        new File("$buildDir/intermediates/classes/").eachFileRecurse { file ->
            if (file.name.contains('$$')) {
                file.renameTo(file.path.replace('$$', '$'))
            }
        }
    }
}
// this is for the report
...

jacoco.java:

package anubhav.calculatorapp;

import android.util.Log;

import java.lang.reflect.Method;

public class jacoco {
    static void generateCoverageReport() {
        String TAG = "jacoco";
        // use reflection to call emma dump coverage method, to avoid
        // always statically compiling against emma jar
        String coverageFilePath = "/sdcard/coverage.exec";
        java.io.File coverageFile = new java.io.File(coverageFilePath);
        try {
            Class<?> emmaRTClass = Class.forName("com.vladium.emma.rt.RT");
            Method dumpCoverageMethod = emmaRTClass.getMethod("dumpCoverageData",
                    coverageFile.getClass(), boolean.class, boolean.class);

            dumpCoverageMethod.invoke(null, coverageFile, false, false);
            Log.e(TAG, "generateCoverageReport: ok");
        } catch (Exception  e) {
            Log.e("jacoco", "inside catch. no emma jar found");
            new Throwable("Is emma jar on classpath?", e);
        }
    }
}

Answer 1

将这些更改写入 build.gradle 文件：

apply plugin: 'jacoco'

另加 testCoverageEnabled true 到 buildTypes 中的调试 {}。我无法强调 testCoverageEnabled 的重要性，它检测文件，没有它您将无法获得覆盖。确保此行添加正确。

要正确设置 'build.gradle'，请检查 'build/intermediates'。

为AndroidManifest.xml

添加读写外部存储权限

在 MainActivity.java 的 onDestroy() 函数中添加这些行：

Log.d("StorageSt", Environment.getExternalStorageState());
        String coverageFilePath = Environment.getExternalStorageDirectory() + File.separator+ "coverage.exec";
        File coverageFile = new File(coverageFilePath);
        super.onStop();
        if(BuildConfig.DEBUG)
        {
            try {
                Class<?> emmaRTClass = Class.forName("com.vladium.emma.rt.RT");
                Method dumpCoverageMethod = emmaRTClass.getMethod("dumpCoverageData",coverageFile.getClass(),boolean.class,boolean.class);
                dumpCoverageMethod.invoke(null, coverageFile,true,false);
            }
            catch (Exception e) {}

运行您的应用，您会在 /sdcard/ 中找到 coverage.exec。如果模拟器上的覆盖范围是 37bytes，请在真实设备上尝试或构建 APK 并将其放入模拟器中进行安装。

然后您可以将 coverage.exec 拉入您的计算机并使用 jacoco 从中生成 HTML 报告。

如何找到 android 应用程序的代码覆盖率以进行手动测试？

How to find the code coverage of an android application for manual testing?

testing

android

code-coverage

gradle

jacoco